[PATCH] USB: autoconf for gadget serial

Here is a patch to add endpoint autoconfiguration to the gadget
serial driver.  I pretty much copied gadget zero autoconfig
for this.  Tested with a NetChip 2280 development board.
Signed-off-by: Al Borchers <alborchers@steinerpoint.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

drivers/usb/gadget/Makefile

@@ -11,7 +11,7 @@ obj-$(CONFIG_USB_GOKU)		+= goku_udc.o
 #
 g_zero-objs			:= zero.o usbstring.o config.o epautoconf.o
 g_ether-objs			:= ether.o usbstring.o config.o epautoconf.o
-g_serial-objs			:= serial.o usbstring.o
+g_serial-objs			:= serial.o usbstring.o epautoconf.o
 gadgetfs-objs			:= inode.o
 g_file_storage-objs		:= file_storage.o usbstring.o config.o \
 					epautoconf.o